faiefield caepenteb



(No Model.) J.. E. CARPENTER.

STOP 000K EOE ELECTRO PNEUMATIG BRAKE SYSTEMS.

Patented Aug. 23, 1887..

N PETERS. Phawulhagmpmr. wnhingm. D. C.

UNITED STATES PATENT EEicE.

J. FAIRFIELD CARPENTER, OF BERLIN, GERMANY.

STOP-COCK FOR ELECTRO-PNEUMATIC BRAKE SYSTEMIS.

SPECIFICATION forming part of Letters Patent No. 368,650, dated August 23, 1887.

Application filed April 8, 1887.

To aZZwwm it 11i/ay concern:

Be it known that I, J. FAIRFIELD CARPEN- TER, a citizen of the United States, residing at Berlin, Prussia, in the Empire of Germany, have invented certain new and useful Improvements in Cock-Couplings for Electro- Pneumatic Brake Systems, of which the followingis afull, clear, and exact description.

The object of this invention is to provide for the ready and accurate application of the hose or coupling-tubes containing electric 'conductors to the cocks in the main pipes of electro-pneumatic air-brake systems. Frequency of the bursting of these tubes, and the necessity of replacing them while on a run, renders it necessary to provide some eX.- peditious and certain means for making repairs. This I accomplish by my invention, in which the cock is provided with portions of electrical conductors having terminal contacts embedded in rubber or other insulating packing-rings; and the couplings with this cock for both the hose and the main pipe are similarly equipped, the alignment of the contacts being insured by registering-pins, as I will now proceed to more particularly set forth and claim.

In the accompanying drawings, in the several iigures of which like parts are similarly designated, Figure 1 is a longitudinal vertical section; Fig. 2, a longitudinal horizontal section; Fig. 3, an end elevation of the cock with the packingring removed; and Fig. 4 shows in detail and on a larger scale the contacts and packing-ring.

The shell ce of the cock is made with side passages, b, in which are permanently arranged sections c of the electric conductors c', which are properly insulated from the shell. These conductors are provided at one or both ends with terminal contacts d, arranged in electrically non-conducting packing-rings e, seated in the end or ends of the shell. At, say, ninety degreesfromthese contacts the shell is provided with sockets f.

The couplingg for the main pipe is provided with the conductors h, which. have contacts h', also insulated in'a packing-ring, t', and this coupling is connected to the shell by a screw ring or collar, j, so as to be readily attached and detached. Alignment of the contacts is insured by pins 7c entering sockets in the coupling and shell at points, say, ninety degrees from the contacts.

Serial No. 234,192. (No model.)

The coupling Z for the hose is also provided with conductors h2, having contacts 71.3 embedded in insulating 1:)acking-i'iiigif in the end of the coupling, the contacts h3 and d meeting.

As indicated in Fig. 4, the contacts may be male and female-#that is to say, opposite conductors may be shaped to it into one another; and in said Fig. 4 of the drawings one contaet-point is shown with a double-inclined projecting surface to it into a double-inclined cavity in the surface of its mate or opposite contact.

The coupling l is united to the shell by a screw ring or collar, m, for convenience in ready attachment and detachment.

Pins k. entering the sockets f in the shell and similar sockets in the coupling Z, serve to insure alignment of the contacts.

l. A stop-cock for electro-pneumatic brake systems, having permanent conductors arranged in its shell around its plug, and provided with contacts, combined with couplings containing conductors, also having contacts adapted to be aligned with the contacts of the shell when the shell and couplings are united, substantially as described.

2. A stop-cock shell provided with electric conductors having terminal insulated contacts, combined with a coupling, also having conductors, provided with terminal insulated contacts and aligning devices, substantially as described.

3. A stopcock shell provided with electric conductors having terminal insulated contacts, combined with a coupling, also having conductors, provided with terminal insulated contacts and aligning devices, and a screw ring or collar for uniting the coupling and shell, substantially as described.

4. A stop-cock having permanently-applied electric conductors, couplings, also provided with conductors, interposed insulating packing-rings, and male and female contacts permanently applied to the conductors and ar ranged in the packing-rings, substantially as described.

In testimony whereof I have hereunto set my hand this 5th day of April, A. D. 1887.

J. FAIRFIELD CARPENTER.

Witnesses:

It. FURMIsoH, C. D. HAND.

ICO 

